Mitsubishi L200. Manual - part 114

TROUBLESHOOTING

DIESEL FUEL

13A-252

STEP 4. Check harness between C-103 (terminal 
No. 114) engine-ECU connector and B-01 
(terminal No. 3) Vehicle speed sensor connector.

NOTE: Before checking harness, check intermediate 
connectors C-30, C-35 <R. H. drive vehicles>, C-53 
<L. H. drive vehicles> and C-127, and repair if nec-
essary.

• Check output line for open circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Repair the damaged harness wire.

STEP 5. M.U.T.-III diagnosis code

• Reconfirmation of diagnosis code.

Q: Is the diagnosis code set?

YES : 

Replace the engine-ECU. When the engine-

ECU is replaced, write the chassis number 
(Refer to GROUP 00 

− Precautions Before 

Service 

− How to Perform Chassis Number 

Writing ). After replacing the engine-ECU, 
register the injector identification code and 
learn fuel injection (Refer to GROUP 00 

− 

Precautions Before Service 

− What The 

Common Rail Engine Learns ). After 
registering the injector identification code, 
the vehicle equipped with the DPF carries 
out the forcible DPF regeneration. (Refer to 
GROUP 17 

− Emission Control − Diesel 

Particulate Filter (DPF) System 

− Forcible 

DPF Regeneration ).

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunctions ).

AKA00090

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116

144

C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

AK503653

1

2

3

<2WD>

<4WD>

B-01 (B)

B-01 (B)

Connector: B-01

AB

Harness side 
connector

TROUBLESHOOTING

DIESEL FUEL

13A-253

Code No. P0513: Immobilizer Malfunction

FUNCTION

• Engine-ECU sends or receives the control sig-

nals to or from ETACS-ECU to certify the ignition 
key.

NOTE: 

.

•

If the registered ignition keys are close each 
other when starting the engine, radio interfer-
ence may cause this code to be displayed.

•

This code may be displayed when registering 
the key encrypted code.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position.

Judgment Criterion

• The check result of the ETACS-ECU is not suita-

ble for that of the engine-ECU.

PROBABLE CAUSES

• Open/short circuit in immobilizer system circuit or 

loose connector contact

• Failed ETACS-ECU

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis code.

• Confirm whether the diagnosis codes are output 

from ETACS-ECU.

Q: Is the diagnosis code output? 

YES : 

Perform the troubleshooting of immobilizer 

system (Refer to GROUP 54A 

− Immobilizer 

System 

− Check Chart for Diagnosis Code ).

NO : 

If diagnosis code P0513 output again after 
the MPI diagnosis code has been erased, 
replace the engine-ECU. When the engine-
ECU is replaced, write the chassis number 
(Refer to GROUP 00 

− Precautions Before 

Service 

− How to Perform Chassis Number 

Writing ). After replacing the engine-ECU, 
register the injector identification code and 
learn fuel injection (Refer to GROUP 00 

− 

Precautions Before Service 

− What The 

Common Rail Engine Learns ). After 
registering the injector identification code, 
the vehicle equipped with the DPF carries 
out the forcible DPF regeneration. (Refer to 
GROUP 17 

− Emission Control − Diesel 

Particulate Filter (DPF) System 

− Forcible 

DPF Regeneration ).

TROUBLESHOOTING

DIESEL FUEL

13A-254

Code No. P0515: Battery Temperature Sensor System <Euro5>

OPERATION

• A power voltage of 5 V is applied to the battery 

temperature sensor output terminal (terminal No. 
2) from the engine-ECU (terminal No. 39).

• The power voltage is earthed to the engine-ECU 

(terminal No. 155) from the battery temperature 
sensor (terminal No. 3).

FUNCTION

• The battery temperature sensor converts the bat-

tery temperature into a voltage and inputs the sig-
nal to the engine-ECU.

• In response to the signal, the engine-ECU con-

trols charging and discharging.

• The battery temperature sensor is a kind of resis-

tor, which has characteristics to reduce its resist-
ance as the battery temperature rises. Therefore, 
the sensor output voltage varies with the battery 
temperature, and becomes lower as the battery 
temperature rises.

TROUBLE JUDGMENT

Check Condition

• Battery positive voltage is 8 − 16 V.

• 2 seconds later after the ignition switch has been 

in "ON" position or the engine has started up.

Judgment Criterion

• The battery temperature sensor output voltage is 

more than 4.88 V.

or

AKB00273

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118119 120 121122 123124 125126127 128 129130

131132 133 134135 136137 138139140 141142 143

146147 148 149150 151152 153154155 156 157158

117

145

116

144

2

4

1

3

155

39

Battery temperature
sensor (integrated in
battery current sensor)

3

2

5 V

Battery Temperature Sensor Circuit

A-152

C-103

C-105

Engine-ECU

BR-B

GR-L

AB

Wire colour code
B: Black  LG: Light green  G: Green  L: Blue  W: White  Y: Yellow  SB: Sky blue  BR: Brown  O: Orange  GR: Grey
R: Red  P: Pink  V: Violet  PU: Purple  SI: Silver

TROUBLESHOOTING

DIESEL FUEL

13A-255

• The battery temperature sensor output voltage is 

less than 0.99 V.

PROBABLE CAUSES

• Failed battery temperature sensor

• Open/short circuit or harness damage in battery 

temperature sensor circuit or loose connector 
contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Item No. 402: Battery temperature sensor

OK: At ambient temperature (atmospheric 
temperature) of battery temperature sensor, 
or equivalent

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunctions ).

NO : 

Go to Step 2 .

STEP 2. Connector check: A-152 battery current 
sensor connector

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair or replace the connector.

STEP 3. Check battery temperature sensor itself.

• Check battery temperature sensor itself (Refer to 

GROUP 54A 

− Battery − Inspection − Battery 

Current Sensor Check ).

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Replace the battery current sensor.

STEP 4. Perform voltage measurement at A-152 
battery current sensor connector.

• Disconnect connector and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 2 and earth.

OK: 4.5 

− 4.9 V

Q: Is the check result normal?

YES : 

Go to Step 8 .

NO : 

Go to Step 5 .

STEP 5. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair or replace the connector.

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

AKA00089

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C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB